Find the last 4 digits (ZIP+4) for an address in 61261

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ZIP Code 61261 – Lyndon, IL

Lyndon, Illinois · Whiteside County · Central time

ZIP code61261
CityLyndon
StateIllinois
CountyWhiteside County
Population656
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area16.56 sq mi
Center (lat, long)41.7360, -89.9100

Area codes in this area

779815

These are the area codes that most often serve ZIP 61261 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

61270 Morrison · 6.8 mi61251 Fenton · 8.4 mi61277 Prophetstown · 8.5 mi61037 Galt · 8.5 mi61071 Rock Falls · 10.9 mi61081 Sterling · 11.8 mi61250 Erie · 11.8 mi61283 Tampico · 11.8 mi

About ZIP 61261

ZIP code 61261 is assigned to Lyndon, Illinois. It lies in Whiteside County. Its Census area covers about 16.56 square miles of land. The closest neighboring ZIP is 61270 (Morrison), about 6.8 miles away.

Every address in 61261 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources